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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
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There are more bacteria in your mouth than there are people in the world.
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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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There are more nerve cells in one human brain than there are stars in the Milky Way.